Pretty sure these types of threads aren't allowed. Bluelight isn't around to help you get high...more like to help you get high safely. Also, self-serving threads of this nature are generally frowned upon. I think you should rephrase your question, just saying.
If you're going to poly-drug it up, do it right. Reduce the dose you would usually take of both drugs by at least half, make sure you eat at least a little something before you take anything and stay hydrated. Work your dosage up slowly and don't take both drugs at exactly the same time. Watch how much you re-dose as well.
These things can minimize risk when abusing more than one substance at once, especially stimulants and opiates which IMO isn't that great.
My opinion? I personally would save the hydrocodone for when I'm coming down from the adderall.